US8581464B2 - Segmented rotor - Google Patents

Segmented rotor Download PDF

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Publication number
US8581464B2
US8581464B2 US12/844,850 US84485010A US8581464B2 US 8581464 B2 US8581464 B2 US 8581464B2 US 84485010 A US84485010 A US 84485010A US 8581464 B2 US8581464 B2 US 8581464B2
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US
United States
Prior art keywords
rotor
segments
segmented
active
rim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/844,850
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English (en)
Other versions
US20110266909A1 (en
Inventor
Murtuza Lokhandwalla
Kiruba Sivasubramaniam Haran
Daniel Erno
Robert Zirin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US12/844,850 priority Critical patent/US8581464B2/en
Assigned to GENERAL ELECTRIC COMPANY reassignment GENERAL ELECTRIC COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ERNO, DANIEL, LOKHANDWALLA, MURTUZA, ZIRIN, ROBERT, HARAN, KIRUBA SIVASUBRAMANIAM
Priority to DE102011051947A priority patent/DE102011051947A1/de
Priority to DK201170407A priority patent/DK178214B1/en
Priority to CN201110221939.7A priority patent/CN102347651B/zh
Publication of US20110266909A1 publication Critical patent/US20110266909A1/en
Application granted granted Critical
Publication of US8581464B2 publication Critical patent/US8581464B2/en
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present application relates generally to a segmented rotor of an electrical machine and more particularly relates to a segmented rotor for use with large electrical generators such as in a wind turbine direct drive and the like so as to meet conventional ground shipping constraints while maintaining product reliability.
  • Wind turbines have received increased public attention and interest because such turbines are environmentally safe and provide a relatively inexpensive alternative energy source with zero greenhouse gas (“GHG”) emissions. Due to this growing interest, considerable efforts have been made to develop wind turbines that are reliable and efficient.
  • GOG greenhouse gas
  • wind turbines use the wind to generate electricity or to drive any type of load.
  • the wind turns one or more blades connected to a hub and a shaft.
  • the shaft may be in communication with a rotor of a generator. The spin of the blades, the shaft, and the rotor thus generates electricity.
  • the wind turbine converts the kinetic energy of the wind into mechanical power and then the mechanical power drives the generator to produce electricity.
  • a rotor for a wind turbine generator having about a five (5) megawatt rating generally may have a diameter of more than about six (6) meters.
  • Rotors of other types of utility grade wind turbines may be considerably larger.
  • Typical intermodal shipping containers used for rail, ship, and/or truck transport generally may be about four (4) meters in depth, about four (4) meters in height, and about fifteen (15) meters long. As such, these conventional intermodal shipping containers may not be used for the transport of most types of wind turbine rotors and the like. Rather, more expensive types of transport may be necessary.
  • the present application thus provides a segmented rotor.
  • the segmented rotor may include a center wheel, a number of rotor support segments positioned about the center wheel, and a number of active rotor components positioned about each of the rotor support segments.
  • the present application further provides a segmented rotor.
  • the segmented rotor may include one or more hubs, a number of spider arms extending from the hubs, and a number of rotor segments attached to the spider arms and forming a rim thereabout.
  • the present application further provides for a segmented rotor.
  • the segmented rotor may include a center wheel with a hub, a number of support arms extending therefrom, and a rim.
  • a number of rotor support segments may be positioned about the rim of the center wheel.
  • the rotor support segments may include a number of segment arms and a segment rim.
  • a number of magnets may be positioned about the segments rims of the rotor support segments.
  • the present application further provides for a segmented rotor kit.
  • the segmented rotor kit may include a center wheel, a number of rotor support segments, and a number of active rotor segments.
  • the center wheel, the rotor support segments, and the active rotor segments each may have a size suitable for shipping, together or separately, within a container with about a four by four by fifteen meter configuration.
  • FIG. 1 is a schematic view of a known wind turbine.
  • FIG. 2 is a schematic view of a known wind turbine generator.
  • FIG. 3 is a perspective view of a segmented rotor as may be described herein.
  • FIG. 4 is a perspective view of a wheel that may be used with the segmented rotor of FIG. 3 .
  • FIG. 5 is a perspective view of a rotor segment as may be used with the segmented rotor of FIG. 3 .
  • FIG. 6 is a partial side view of the rotor segment of FIG. 5 .
  • FIG. 7 is a perspective view of an alternative embodiment of a segmented rotor as may be described herein.
  • FIG. 8 is a plan view of a rotor half as may be used with the segmented rotor of FIG. 7 .
  • FIG. 9 is a perspective view of an alternative embodiment of a segmented rotor as may be described herein.
  • FIG. 10 is a perspective view of a number of spider arms as may be used with the segmented rotor of FIG. 9 .
  • FIG. 11 is a perspective view of a rotor segment as may be used with the segmented rotor of FIG. 9 .
  • FIG. 1 shows a schematic view of one example of a known wind turbine 10 .
  • the wind turbine 10 may include a tower 15 supporting a nacelle 20 .
  • the nacelle 20 may support a drive train 25 that extends therethrough.
  • One end of the drive train 25 supports a hub 30 with a number of blades 35 thereon.
  • the other end of the drive train 25 may be in communication with a gearbox 40 and a wind turbine electrical generator 45 .
  • suitable wind turbines 10 may be available from General Electric Company of Schenectady, N.Y. Other configurations may be used herein.
  • FIG. 2 shows a schematic view of an example of the wind turbine electrical generator 45 .
  • the wind turbine electrical generator 45 may include a rotor 50 driven by the drive train 25 or otherwise so as to generate an electrical field with respect to a stator 55 .
  • Other components within the wind turbine electrical generator 45 may include a field converter 60 and a collector system 65 .
  • Other configurations and other types of components may be used herein.
  • FIGS. 3-6 show an example of a segmented rotor 100 as may be described herein for use with an electrical generator and the like.
  • the segmented rotor 100 may include a center wheel 110 .
  • the center wheel 110 may be of unitary construction.
  • the center wheel 110 may include a hub 120 and a number of support arms 130 extending from the hub 120 and leading to an outer rim 140 .
  • the hub 120 may connect to the drive train 25 or otherwise.
  • the hub 120 may mate with the drive train 25 via ball bearings and the like. Any number and shape of the support arms 130 may be used herein.
  • the center wheel 110 may have any desired size but preferably no larger than about four (4) meters in diameter so as to fit within a conventional intermodal shipping container and the like.
  • FIG. 5 shows an individual rotor support segment 150 of the segmented rotor 100 .
  • Any number of the rotor support segments 150 may be positioned about the outer rim 140 of the center wheel 110 .
  • the rotor support segment 150 is shown as being one-eighth of the total diameter of the segmented rotor 100 , any desired configuration and size of the individual rotor segments 150 may be used such as one-fourth, one-half, etc.
  • Each rotor support segment 150 may be bolted or otherwise attached to the outer rim 140 .
  • Each rotor support segment 150 may have a number of segment arms 160 extending to a segment rim 170 . Any number, shape, or size of the segment arms 160 may be used.
  • the rotor support segments 150 may be sized so as to fit within a conventional intermodal shipping container and the like.
  • a number of active rotor components or segments 180 may be positioned about the segment rim 170 or elsewhere.
  • the active rotor segments 180 may include a number of permanent magnets 190 positioned about a number of laminations 200 .
  • the magnets 190 may be arranged in pairs with each pair having a pole 195 .
  • Each segment 180 may have a number of poles 195 .
  • Each segment 180 may be cut along an active axis 185 (D axis) so as to minimize any increase in magnetic resistance.
  • Each pair of the segments 180 thus meet along the active axis 185 .
  • the active rotor segments 180 may be attached to the segment rim 170 via conventional means such as a number of dovetails 205 . Alternatively, slots, bars, direct bolting, or other types of attachment means may be used herein. Other types of active rotor segments or components 180 and/or other types of configurations also may be used herein.
  • FIGS. 7 and 8 show an alternative embodiment of a segmented rotor 210 as may be described herein.
  • the segmented rotor 210 may be similar to the segmented rotor 100 described above but with a rotor 220 that may be split into a first part or half 230 and a second part or half 240 while using a center wheel in the form of a common hub 250 .
  • Other configurations and sizes also may be used.
  • the active rotor segments 180 also may be used herein.
  • the active rotor segments 180 may be attached to the common hub 250 via the dovetails 205 , direct bolting, or other types of attachment means.
  • the rotor support segments 150 and the hub 250 also may be sized to fit within a conventional intermodal shipping container and the like.
  • FIGS. 9-11 show a further embodiment of a segmented rotor 260 as may be described herein.
  • the segmented rotor 260 may includes a number of spoke or spider arms 270 positioned on one or more hubs 280 . Specifically, pairs of the spider arms 270 may be mounted on each hub 280 .
  • the hub or hubs 280 may be split.
  • the spider arms 270 may take a substantially X-like shape.
  • the spider arms 270 also may take the form of solids structures such as the support arms 130 described above. Alternatively, a more solid cone-like shape may be used. Casting or other types of fabricating techniques may be used herein.
  • two (2) hubs 280 with the spider arms 270 thereon are shown.
  • a single hub 280 may be used.
  • Each of the spider arms 270 may extend to a rotor support segment 290 and may be attached thereto via bolting and the like.
  • the combined rotor support segments 290 may form a completed rim 300 .
  • the hubs 280 may be split and axially displaced from the rotor support segments 290 such that the spider arms 270 may be inclined and circumferentially tilted.
  • the spider arms 270 and the rotor support segments 290 may be individually factory balanced.
  • the active rotor segments 180 as described above, may be positioned about the rotor support segments 290 via the dovetails 205 , direct bolting, or otherwise. Other configurations may be used herein.
  • the components of the segmented rotors 100 , 210 , 260 and the like may be sized so as to ship in a conventional intermodal shipping container and other types of conventional containers not requiring extraordinary attention and expense.
  • a container may have about a four by four by fifteen meter configuration with a configuration of about 3.65 by 3.65 by 14.6 meters in specific. Any other size or configuration may be used herein.
  • the components of the segmented rotors 100 , 210 , 260 then may be assembled, aligned, and balanced on site.
  • the components may be assembled via bolting, riveting, and the like.
  • Other types of connection means may be used herein.
  • the resultant rotor structure thus provides the desired strength and integrity of factory assembled components but with significantly easier shipping. Conventional shipping containers thus may be used at a significantly reduced cost and expense.
  • the components herein also may be shipped to locations otherwise inaccessible via nonconventional transport. As such, electrical generators for wind turbines and the like may be positioned in diverse locations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Wind Motors (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
US12/844,850 2010-07-28 2010-07-28 Segmented rotor Expired - Fee Related US8581464B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/844,850 US8581464B2 (en) 2010-07-28 2010-07-28 Segmented rotor
DE102011051947A DE102011051947A1 (de) 2010-07-28 2011-07-19 Segmentierter Rotor
DK201170407A DK178214B1 (en) 2010-07-28 2011-07-26 A segmented rotor
CN201110221939.7A CN102347651B (zh) 2010-07-28 2011-07-28 分段转子

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/844,850 US8581464B2 (en) 2010-07-28 2010-07-28 Segmented rotor

Publications (2)

Publication Number Publication Date
US20110266909A1 US20110266909A1 (en) 2011-11-03
US8581464B2 true US8581464B2 (en) 2013-11-12

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ID=44857689

Family Applications (1)

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US12/844,850 Expired - Fee Related US8581464B2 (en) 2010-07-28 2010-07-28 Segmented rotor

Country Status (4)

Country Link
US (1) US8581464B2 (zh)
CN (1) CN102347651B (zh)
DE (1) DE102011051947A1 (zh)
DK (1) DK178214B1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120187696A1 (en) * 2011-01-20 2012-07-26 Kabushiki Kaisha Yaskawa Denki Rotating electric machine and wind power generation system
US20120248781A1 (en) * 2011-03-10 2012-10-04 Wilic S.Ar.L. Wind turbine
US10756606B2 (en) 2016-10-06 2020-08-25 Ge Energy Power Conversion Technology Ltd Segmented rotor for an asynchronous machine and an asynchronous machine having such a segmented rotor

Families Citing this family (14)

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Publication number Priority date Publication date Assignee Title
CA2860991A1 (en) * 2012-01-13 2013-07-18 Youwinenergy Cooling system of a wind turbine
EP2621056B1 (en) * 2012-01-27 2016-10-26 ALSTOM Renewable Technologies Rotor assembly for a wind turbine generator
EP2621054B1 (en) * 2012-01-27 2020-02-26 GE Renewable Technologies Wind B.V. Stator assembly for a wind turbine generator
US20130343889A1 (en) * 2012-06-25 2013-12-26 Richard A. Himmelmann Friction Wheel Drive Train for a Wind Turbine
DE102012105992A1 (de) 2012-07-04 2013-11-07 Lloyd Dynamowerke Gmbh & Co. Kg Element einer elektrischen Maschine mit einer Halterung und einem Permanentmagneten, Bauteil mit wenigstens einem Element sowie eine elektrische Maschine
ITMI20121303A1 (it) * 2012-07-25 2014-01-26 Wilic Sarl Rotore di una macchina elettrica rotante di grande diametro e macchina elettrica rotante
EP3032703B1 (en) * 2012-08-31 2018-08-29 Lappeenranta University of Technology Electrical machine
EP2731232B1 (en) 2012-11-08 2019-01-30 GE Renewable Technologies Wind B.V. Generator for a wind turbine
DE102015212453A1 (de) * 2015-07-02 2017-01-05 Wobben Properties Gmbh Trägerelement, insbesondere Statorträger-Element und/oder Läuferträger-Element, System von Trägerelementen, Generatorträger, Generator, Generator-Tragsystem, Gondel einer Windenergieanlage, Windenergieanlage und Verfahren zur Montage eines Generator-Tragsystems
DE102015212452A1 (de) * 2015-07-02 2017-01-05 Wobben Properties Gmbh Trägerelement, insbesondere Statorträger-Element und/oder Läuferträger-Element, System von Trägerelementen, Generatorträger, Generator, Generator-Tragsystem, Gondel einer Windenergieanlage, Windenergieanlage und Verfahren zur Montage eines Generator-Tragsystems
DE102015213609A1 (de) * 2015-07-20 2017-01-26 Siemens Aktiengesellschaft Hochdynamisch betreibbarer Rotor für eine elektrische Maschine
SE539731C2 (sv) * 2016-03-04 2017-11-14 Vertical Wind Ab Rotor för en elektrisk generator och förfarande för dess tillverkning
CN108711966B (zh) * 2018-06-26 2019-12-06 新疆金风科技股份有限公司 发电机的转子组件及发电机
CN112152395B (zh) * 2019-06-26 2022-08-26 北京金风科创风电设备有限公司 大直径电机及其装配方法

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US7394178B1 (en) * 2007-01-29 2008-07-01 Atomic Energy Council-Institute Of Nuclear Energy Research Generator rotor structure
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US20080277942A1 (en) * 2007-05-07 2008-11-13 Manuel Torres Martinez Structural arrangement of wind generators
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120187696A1 (en) * 2011-01-20 2012-07-26 Kabushiki Kaisha Yaskawa Denki Rotating electric machine and wind power generation system
US8937417B2 (en) * 2011-01-20 2015-01-20 Kabushiki Kaisha Yaskawa Denki Rotating electric machine and wind power generation system
US20120248781A1 (en) * 2011-03-10 2012-10-04 Wilic S.Ar.L. Wind turbine
US9006918B2 (en) * 2011-03-10 2015-04-14 Wilic S.A.R.L. Wind turbine
US10756606B2 (en) 2016-10-06 2020-08-25 Ge Energy Power Conversion Technology Ltd Segmented rotor for an asynchronous machine and an asynchronous machine having such a segmented rotor

Also Published As

Publication number Publication date
DK178214B1 (en) 2015-08-31
DK201170407A (en) 2012-01-29
CN102347651B (zh) 2016-06-22
DE102011051947A1 (de) 2012-02-02
US20110266909A1 (en) 2011-11-03
CN102347651A (zh) 2012-02-08

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